Fig. 4From: Comparing three induction chemotherapy regimens for patients with locoregionally advanced nasopharyngeal carcinoma based on TNM stage and plasma Epstein–Barr virus DNA levelKaplan–Meier (a) progression-free survival (PFS), (b) overall survival (OS), (c), locoregional relapse-free survival (LRFS), and (d) distant metastasis-free survival (DMFS) curves for the 521 stage IVa-b patients with EBV ≥ 1500 copies/ml NPC patients receiving induction TPF, PF, or TPBack to article page